billion this year. and southern california gets a tasty bite of that just for hosting e-3. it s estimated we bring probably over $40 million activity to l.a. just over these three days. reporter: but all that e-3 money definitely not easy money. with 50,000 people expected to attend the lines are long and you d better bring some ear plugs. rob hayes reporting for abc news. a lot of cool technology there. we should have gone. we should have gone. man! what were we thinking? we were playing atari at the time. or is that donkey kong? wow. you want to keep going? tetris? keep going. mario brothers? there it is. did somebody just tell you in your ear? no, no no, nobody told me in my ear. the look on my face said it all. can we see the look on the face? can we put it back up there? where s my neck? mario. oh, i have luigi. there s the mushroom. don t get caught. that s the news for this half hour.